I don’t think it should be a cause of big concern for anyone. Because I believe a player can be better than the others. But it is also true that some other players might think they are deserving of this type of salary. That's why there might be some problems in the team.
But I think the players should understand that if they perform better, they are actually going to get better salaries in the future as well. Added pressure is something that he might face regarding the fact that he is getting paid so well. But I believe he is actually worthy of that much money and I don’t think he will be performing badly just because of some added pressure.
Arsenal are steadily getting back to structure, and all thanks goes to Mikel Arteta, the players, and, lastly, the supporters of the club. It has not been a straightforward route, but things are improving with numerous instances of improved performance. Salary is one of the most important factors that can derail a player's performance; everyone wants a substantial wage, but they must prove that they are worthy of it, consequently they must improve their abilities. Kai Havertz is a prominent player with extensive experience in football; I am confident that he can help the team in important areas where they are struggling. However, making him earn far more than other players puts other players' jobs in jeopardy.